S3F
  -OEChem-08232420593D

  8  9  0     1  0  0  0  0  0999 V2000
   13.7010    1.7560  -16.3360 S   0  4  1  0  0  0  0  0  0  0  0  0
   13.5110    1.2200  -18.6020 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   14.0250    3.1650  -19.5170 S   0  0  0  0  0  0  0  0  0  0  0  0
   14.7900    3.3740  -17.4420 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   11.4290    0.4840  -19.0620 S   0  4  1  0  0  0  0  0  0  0  0  0
   11.5970    1.9640  -17.0830 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   11.8040    3.2890  -15.8620 O   0  4  0  0  0  0  0  0  0  0  0  0
   10.2160    2.3670  -19.8000 Fe  0  0  0  0  0  0  0  0  0  0  0  0
  5  8  1  0  0  0  0
  2  3  1  0  0  0  0
  3  4  1  0  0  0  0
  2  5  1  0  0  0  0
  5  6  1  0  0  0  0
  1  2  1  0  0  0  0
  1  4  1  0  0  0  0
  1  6  1  0  0  0  0
  6  7  1  0  0  0  0
M  RAD  3   1   2   5   2   7   2
M  END
> <OPENEYE_ISO_SMILES>
[O][Fe]1[S@]([Fe]2[S@]1[Fe]S2)[Fe]

> <OPENEYE_INCHI>
InChI=1S/4Fe.O.3S

> <OPENEYE_INCHIKEY>
GKMVHSXAFMRWRP-UHFFFAOYSA-N

> <FORMULA>
Fe4OS3

$$$$